Insert tolerance curves to the graphical trend line
On your graphic, when you add the trend line, it can be very useful to have the possibility to add the upper limit and lower limit lines. For example, the X axis contains the number of hours due to projects, and the Y axis contains the projects' price. It would be very useful to implement limits (up and down) to the trend line. Then, you can have an estimation of the number of hours you can use for a project of a certain price, and vice versa.
You fix the percentage of gap you want (Exemple +/- 10%) and it draws you the lower limit and the upper limit.
Thank you !!!